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Deviations: incomplete dominance, co-dominance, multiple alleles, blood groups, pleiotropy, polygenic inheritance

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Every question from past board papers on Deviations: incomplete dominance, co-dominance, multiple alleles, blood groups, pleiotropy, polygenic inheritance, newest paper first. Open any question for its full worked answer.

NEET UG 2025 question paper (official, booklet 45)

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  1. What is the pattern of inheritance for polygenic trait?

    4 marks · See worked answer →

NEET UG 2024 question paper (official, booklet S6)

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  1. A pink flowered Snapdragon plant was crossed with a red flowered Snapdragon plant. What type of phenotype/s is/are expected in the progeny?

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  2. As per ABO blood grouping system, the blood group of father is \(B^+\), mother is \(A^+\) and child is \(O^+\). Their respective genotype can be

    A. \(I^Bi\) / \(I^Ai\) / \(ii\)

    B. \(I^BI^B\) / \(I^AI^A\) / \(ii\)

    C. \(I^AI^B\) / \(iI^A\) / \(I^Bi\)

    D. \(I^Ai\) / \(I^Bi\) / \(I^Ai\)

    E. \(iI^B\) / \(iI^A\) / \(I^AI^B\)

    Choose the most appropriate answer from the options given below :

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NEET UG 2023 question paper (official, booklet G6)

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  1. The phenomenon of pleiotropism refers to

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NEET UG 2021 question paper (official, booklet M4)

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  1. Persons with ‘AB’ blood group are called as "Universal recipients". This is due to :

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NEET UG 2020 question paper (official, booklet E1)

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  1. Identify the wrong statement with reference to the gene 'I' that controls ABO blood groups.

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NEET UG 2019 question paper (official, booklet P1)

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  1. In \(\textit{Antirrhinum}\) (Snapdragon), a red flower was crossed with a white flower and in \(F_1\) generation, pink flowers were obtained. When pink flowers were selfed, the \(F_2\) generation showed white, red and pink flowers. Choose the incorrect statement from the following :

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NEET UG 2018 question paper (official, booklet EE)

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  1. Which of the following pairs is *wrongly* matched ?

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  2. Which of the following characteristics represent 'Inheritance of blood groups' in humans ?

    a. Dominance

    b. Co-dominance

    c. Multiple allele

    d. Incomplete dominance

    e. Polygenic inheritance

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NEET UG 2017 question paper (official, booklet B)

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  1. The genotypes of a Husband and Wife are \(I^AI^B\) and \(I^Ai\).

    Among the blood types of their children, how many different genotypes and phenotypes are possible ?

    4 marks · See worked answer →